package com.cjhedu.web.utils;
import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import com.cjhedu.web.config.AliYunOssProperties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;

import java.io.FileInputStream;
import java.io.InputStream;
import java.util.UUID;

/**
 * @author 陈佳豪
 * @version 1.0
 */
@Component
public class MyAliYunOssUtils {
        public static void main(String[] args) throws Exception {
            // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
            String endpoint = "https://oss-cn-beijing.aliyuncs.com";
            // 从环境变量中获取访问凭证。运行本代码示例之前，请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
            EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
            // 填写Bucket名称，例如examplebucket。
            String bucketName = "cjhling-kk";
            // 填写Object完整路径，完整路径中不能包含Bucket名称，例如exampledir/exampleobject.txt。
            String objectName = "abc.jpg";
            // 填写本地文件的完整路径，例如D:\\localpath\\examplefile.txt。
            // 如果未指定本地路径，则默认从示例程序所属项目对应本地路径中上传文件流。
            String filePath= "D:\\b\\4d0fb6ce-4daa-4497-9967-4a18a0ccb9125..png";
            // 填写Bucket所在地域。以华东1（杭州）为例，Region填写为cn-hangzhou。
            String region = "cn-beijing";

            // 创建OSSClient实例。
            // 当OSSClient实例不再使用时，调用shutdown方法以释放资源。
            ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
            clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
            OSS ossClient = OSSClientBuilder.create()
                    .endpoint(endpoint)
                    .credentialsProvider(credentialsProvider)
                    .clientConfiguration(clientBuilderConfiguration)
                    .region(region)
                    .build();

            try {
                InputStream inputStream = new FileInputStream(filePath);
                // 创建PutObjectRequest对象。
                PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, inputStream);
                // 创建PutObject请求。
                PutObjectResult result = ossClient.putObject(putObjectRequest);
                System.out.println(result);
            } catch (OSSException oe) {
                System.out.println("Caught an OSSException, which means your request made it to OSS, "
                        + "but was rejected with an error response for some reason.");
                System.out.println("Error Message:" + oe.getErrorMessage());
                System.out.println("Error Code:" + oe.getErrorCode());
                System.out.println("Request ID:" + oe.getRequestId());
                System.out.println("Host ID:" + oe.getHostId());
            } catch (ClientException ce) {
                System.out.println("Caught an ClientException, which means the client encountered "
                        + "a serious internal problem while trying to communicate with OSS, "
                        + "such as not being able to access the network.");
                System.out.println("Error Message:" + ce.getMessage());
            } finally {
                if (ossClient != null) {
                    ossClient.shutdown();
                }
            }
        }
    //    @Value("${aliyun.oss.bucketName}")
    //private String bucketName;
    //@Value("${aliyun.oss.endpoint}")
    //private String endpoint;
    @Autowired
    private AliYunOssProperties aliYunOssProperties;

    //springmvc 文件上传组件 上传后文件的路径
        public String uploadToOss(MultipartFile multipartFile) {

            OSS ossClient = null;
            try {
                // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
                // 从环境变量中获取访问凭证。运行本代码示例之前，请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
                EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
                // 填写Bucket名称，例如examplebucket。
                String uuid = UUID.randomUUID().toString();
                String originalFilename = multipartFile.getOriginalFilename();
                String[] arr = originalFilename.split("\\.");

                String objectName = uuid + "." + arr[arr.length - 1];
                // 填写Object完整路径，完整路径中不能包含Bucket名称，例如exampledir/exampleobject.txt。
                //String objectName = "abc.jpg";
                // 填写本地文件的完整路径，例如D:\\localpath\\examplefile.txt。
                // 如果未指定本地路径，则默认从示例程序所属项目对应本地路径中上传文件流。
                //String filePath = "D:\\b\\4d0fb6ce-4daa-4497-9967-4a18a0ccb9125..png";
                // 填写Bucket所在地域。以华东1（杭州）为例，Region填写为cn-hangzhou。
                String region = "cn-beijing";

                // 创建OSSClient实例。
                // 当OSSClient实例不再使用时，调用shutdown方法以释放资源。
                ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
                clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
                ossClient = OSSClientBuilder.create()
                        .endpoint(aliYunOssProperties.getEndpoint())
                        .credentialsProvider(credentialsProvider)
                        .clientConfiguration(clientBuilderConfiguration)
                        .region(region)
                        .build();

                // 创建PutObjectRequest对象。
                PutObjectRequest putObjectRequest = new PutObjectRequest(aliYunOssProperties.getBucketName(), objectName, multipartFile.getInputStream());
                // 创建PutObject请求。
                PutObjectResult result = ossClient.putObject(putObjectRequest);
                System.out.println(result);
                //拼接文件名
                StringBuilder stringBuilder = new StringBuilder("https://");
                String url = stringBuilder.append(aliYunOssProperties.getBucketName()).append(".")
                        .append(aliYunOssProperties.getEndpoint().substring(8)).
                        append("/").
                        append(objectName)
                        .toString();
                return url;

            } catch (Exception oe) {
                oe.printStackTrace();
                throw new RuntimeException("阿里云文件上传失败~");
            } finally {
                if (ossClient != null) {
                    ossClient.shutdown();
                }
            }

        }

    }

